Institute Newton C. Braga

Circuit Bench

TTL Sports Lottery Tip (CB12367E)
This circuit draws one of the three possible guesses of a sports lottery logo: column 1, 2 or the...
12 V battery indicator (CB9137E)
This circuit with two LEDs indicates the status of a battery with two reference voltages. The LEDs can be...
CMOS piezo shield 2 (CB8116E)
This circuit, like the previous one, can be controlled by a microcontroller, functioning as a...